Case-Sensitivity

QOPT is case-insensitive. It converts lowercase English alphabetic characters to

uppercase when used in object names. Therefore, the path name /QOPT/volume/dir/file represents the same path as /QOPT/VOLUME/DIR/FILE..

Security and Authorization

The QOPT ®le system offersvolume-level security, as opposed to ®le or directory-level security. Each optical volume is secured by an authorization list. If a user needs access to directories or ®les on a volume, they will need access to the optical volume. The system administrator, or a user with authorization list management authority, can grant access by doing the following:

1.Use the Work with Optical Volumes (WRKOPTVOL) command to ®nd out which authorization list secures the volume.

2.Use the Edit Authorization List (EDTAUTL) command to add the user to the authorization list.

For more information on optical security, see the book Optical Support, SC41-4310.

User-De®ned File System (UDFS)

Figure 52. The UDFS ®le system accessed through the NFS Server

62OS/400 Network File System Support V4R4

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IBM AS/400E manual User-Dened File System Udfs, Security and Authorization
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AS/400E specifications

The IBM AS/400E, now more commonly known as IBM i, is a robust and versatile midrange server that has been designed to provide a comprehensive computing solution for businesses of all sizes. First introduced in the late 1980s, the AS/400 series has undergone multiple enhancements and rebranding, with the AS/400E being one of the notable iterations. This powerful platform is closely associated with IBM's commitment to reliability, scalability, and integrated business solutions.

One of the main features of the AS/400E is its highly integrated architecture that combines hardware and software into a cohesive system. This integration allows for seamless operations, reducing the complexity typically associated with managing disparate systems. The system is powered by IBM's proprietary OS/400 operating system, which has evolved into IBM i, featuring advanced capabilities like object-oriented programming, integrated database management, and security features that are essential for enterprise environments.

A key characteristic of the AS/400E is its robust database support, primarily through the use of DB2 for i. This integrated database management system enables efficient data handling and retrieval, facilitating real-time business analytics and reporting. Furthermore, the platform supports a variety of programming languages, including RPG, COBOL, and Java, making it flexible for developers who require diverse tools for application development.

The AS/400E is also known for its exceptional reliability and uptime, making it a preferred choice for critical business applications in industries such as finance, healthcare, and manufacturing. This reliability is backed by advanced error detection and correction mechanisms, as well as redundancy features that help prevent data loss and minimize downtime.

In terms of scalability, the AS/400E can effortlessly expand to accommodate growing business demands. Organizations can increase processing power by adding more resources without significant disruption. This scalability, combined with the system’s built-in virtualization capabilities, allows businesses to optimize resource usage and streamline operations.

Security is another defining feature of the AS/400E. The platform incorporates various layers of security measures, including user authentication, encryption, and comprehensive auditing capabilities, ensuring that sensitive business data is protected against unauthorized access.

Overall, the IBM AS/400E remains a powerful tool in the enterprise computing landscape, providing businesses with an integrated, reliable, and secure solution for their technological needs. Its enduring popularity is a testament to its capability to evolve with changing business requirements while maintaining its core attributes of high performance and stability.
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